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Finding the Fourth Proportional to 79,781,660.10, 119,672,490.15 and 79,781,660.10

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Solution

The fourth proportional to 79,781,660.10, 119,672,490.15 and 79,781,660.10 is: 119,672,490.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,781,660.10 : 119,672,490.15 = 79,781,660.10 : x
  2. Step 2: Convert to fraction form
    79,781,660.10/119,672,490.15 = 79,781,660.10/x
  3. Step 3: Cross multiply
    79,781,660.10x = 119,672,490.15 × 79,781,660.10
  4. Step 4: Simplify right side
    79,781,660.10x = 9,547,669,932,467,898
  5. Step 5: Solve for x
    x = 9,547,669,932,467,898/79,781,660.10
  6. Step 6: Final answer
    x = 119,672,490.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.